2010-13 Issues?

Yamaha YZ450F 2010 Yamaha YZ450F 2011 Yamaha YZ450F 2012 Yamaha YZ450F 2013

33 replies to this topic
  • 1stSSPZ

Posted May 17, 2014 - 12:17 PM

#21

YZdaddy, in the High Plains region (Lubbock)...



  • yzdaddy

Posted May 18, 2014 - 04:01 PM

#22

YZdaddy, in the High Plains region (Lubbock)...

Theres a guy that rode with us a few weeks ago that moved in my area from Lubbock. His name was Mark but cant remember his last name. He was a smaller guy said he rode around Lubbock area.



  • billygildark5007

Posted May 24, 2014 - 08:06 PM

#23

Ok so the last few rides my 11 has developed a backfiring issue on shut down... I've cleaned the throttle body, injector, fuel pump, new plug, new exhaust gasket, checked for air leaks at intake boots, repacked exhaust, switch gas I'm using and then went to race gas, valves are in spec, all to no avail. The only other thing I have heard is a lean condition at idle which a dealer would need to remap... Has anyone else had their efi yami backfire???

  • Piznapple

Posted May 26, 2014 - 03:31 AM

#24

My stock 13 back fires all the time whenever I'm not on the throttle say going down a hill. And I had mine re mapped to factory just as a cya.

  • JLB943

Posted May 27, 2014 - 08:12 AM

#25

I haven't had any issue with backfiring. I am now getting an issue with my 11 hesitating and breaking up, seems to only do it when first riding around.

 

 I went down Saturday and the shroud caught the ground. Ended up destroying the radiator. I cannot say whether it is just because the larger front intakes or it would have happened on any bike.


Edited by JLB943, May 27, 2014 - 09:24 AM.


  • Piznapple

Posted May 27, 2014 - 11:41 AM

#26

Does your 11 have a choke? Because mine this that too, and I had the choke running

  • grayracer513

Posted May 27, 2014 - 12:12 PM

#27

To be clear, the "choke" on EFI YZ's is not a choke.  Neither is the one on an FCR carb, BTW, but that at least does enrich the mixture.  The cold start knob on the EFI models doesn't make the fuel mix any richer at all; the unit does that on its own based on input from the coolant sensor.  The only thing the cold start knob does on the EFI bikes is open up more idle air, pretty much exactly the same as if you just turned the idle up some.



Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • yzdaddy

Posted June 02, 2014 - 06:35 AM

#28

My stock 13 back fires all the time whenever I'm not on the throttle say going down a hill. And I had mine re mapped to factory just as a cya.

Mine has only backfired a few times since I bought it and it gets beat on every other day



  • BGoyins

Posted June 02, 2014 - 09:24 AM

#29

Just as a gee-wiz to what gray said, I had my 2011 YZ450 throttle body off this weekend and discovered that at idle, the butterfly is completely closed. Zero air gets past it for idle except that which goes through the idle adjust circuit. Gee-wiz.

  • Piznapple

Posted June 03, 2014 - 05:23 AM

#30

Ahhh I was wonder what that knob was!!! I was like why in the he** would they have a choke on a fi bike! That totally makes a lot more sense then a choke lol. Plus I never bothered to look it up in the owners manual.

  • grayracer513

Posted June 03, 2014 - 08:11 AM

#31

 I never bothered to look it up in the owners manual.

 

:facepalm:

 

Step one:  "RTFM" 



  • Piznapple

Posted June 03, 2014 - 08:13 AM

#32

Lol yep

  • schnajk

Posted June 06, 2014 - 01:27 AM

#33

I have found a yz450f-13 with 90h on it for a great prize.

Is the newer yamis as reliable as the older ones? Or is it a ticking bomb?

  • SAthump

Posted June 07, 2014 - 05:14 PM

#34

Yamaha = solid





Related Content

Forums
Photo

Broken Frame 2010 YZ450F by rider-99


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  84 replies
Reviews

Yamaha YZ450F 2011 by ThumperTalk


Yamaha YZ450F 2011
  • * * * * -
  • 14 reviews
  • Last review by Le_Racer
  • On September 23, 2016
Forums
Photo

considering buying a 2010 YZ450F, asking advice :) by cobrabrouk


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  27 replies
Forums
Photo

Best Looking Yz450f!! by siscokid7


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  419 replies
Forums
Photo

2011 YZ450F Hot Start Problems by brandonkranich


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  26 replies
 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.